Input:
const r = await tools.exec_command({
  cmd: "sed -n '1,280p' app/Services/ProductService.php && sed -n '1,240p' app/Models/ProductVariant.php && sed -n '1,220p' app/Models/InventoryItem.php && rg -n \"ProductVariant::|variants\\(\\)->create|inventoryItems?\" app database/seeders tests | head -200",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 10000,
  max_output_tokens: 30000
});
text(r.output);


Script completed
Wall time 0.1 seconds
Output:

<?php

namespace App\Services;

use App\Enums\ProductStatus;
use App\Events\ProductStatusChanged;
use App\Exceptions\InvalidProductTransitionException;
use App\Models\InventoryItem;
use App\Models\OrderLine;
use App\Models\Product;
use App\Models\ProductVariant;
use App\Models\Store;
use App\Support\HandleGenerator;
use BackedEnum;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\DB;

final class ProductService
{
    public function __construct(
        private readonly HandleGenerator $handles,
        private readonly VariantMatrixService $variants,
    ) {}

    /** @param array<string, mixed> $data */
    public function create(Store $store, array $data): Product
    {
        return DB::transaction(function () use ($store, $data): Product {
            $product = Product::withoutGlobalScopes()->create([
                ...Arr::only($data, ['title', 'description_html', 'vendor', 'product_type', 'tags']),
                'store_id' => $store->id,
                'handle' => $data['handle'] ?? $this->handles->generate((string) $data['title'], 'products', $store->id),
                'status' => $data['status'] ?? 'draft',
            ]);

            $this->syncOptions($product, (array) ($data['options'] ?? []));
            if ($product->options()->exists()) {
                $this->variants->rebuildMatrix($product);
            } else {
                $variantData = (array) ($data['variant'] ?? ($data['variants'][0] ?? []));
                $variant = $product->variants()->create([
                    'sku' => $variantData['sku'] ?? null,
                    'barcode' => $variantData['barcode'] ?? null,
                    'price_amount' => (int) ($variantData['price_amount'] ?? 0),
                    'compare_at_amount' => $variantData['compare_at_amount'] ?? null,
                    'currency' => $variantData['currency'] ?? $store->default_currency,
                    'weight_g' => $variantData['weight_g'] ?? null,
                    'requires_shipping' => $variantData['requires_shipping'] ?? true,
                    'is_default' => true,
                    'position' => 0,
                    'status' => 'active',
                ]);
                InventoryItem::withoutGlobalScopes()->firstOrCreate(
                    ['variant_id' => $variant->id],
                    ['store_id' => $store->id, 'quantity_on_hand' => (int) ($variantData['quantity_on_hand'] ?? 0), 'quantity_reserved' => 0, 'policy' => $variantData['policy'] ?? 'deny'],
                );
            }

            return $product->refresh()->load(['variants.inventoryItem', 'options.values']);
        });
    }

    /** @param array<string, mixed> $data */
    public function update(Product $product, array $data): Product
    {
        return DB::transaction(function () use ($product, $data): Product {
            $fields = Arr::only($data, ['title', 'description_html', 'vendor', 'product_type', 'tags']);
            if (array_key_exists('handle', $data)) {
                $fields['handle'] = $data['handle'];
            } elseif (array_key_exists('title', $data)) {
                $fields['handle'] = $this->handles->generate((string) $data['title'], 'products', (int) $product->store_id, (int) $product->id);
            }
            $product->update($fields);

            if (array_key_exists('options', $data)) {
                $this->syncOptions($product, (array) $data['options']);
                $this->variants->rebuildMatrix($product);
            }
            if (array_key_exists('status', $data)) {
                $this->transitionStatus($product, $data['status'] instanceof ProductStatus ? $data['status'] : ProductStatus::from((string) $data['status']));
            }

            return $product->refresh()->load(['variants.inventoryItem', 'options.values']);
        });
    }

    public function transitionStatus(Product $product, ProductStatus $newStatus): void
    {
        $current = $this->value($product->status);
        if ($current === $newStatus->value) {
            return;
        }

        $allowed = [
            'draft' => ['active', 'archived'],
            'active' => ['draft', 'archived'],
            'archived' => ['draft', 'active'],
        ];
        if (! in_array($newStatus->value, $allowed[$current] ?? [], true)) {
            throw new InvalidProductTransitionException("Cannot transition product from {$current} to {$newStatus->value}.");
        }
        if ($newStatus->value === 'active' && (trim((string) $product->title) === '' || ! $product->variants()->where('price_amount', '>', 0)->exists())) {
            throw new InvalidProductTransitionException('An active product needs a title and at least one priced variant.');
        }
        if ($newStatus->value === 'draft' && $this->hasOrderReferences($product)) {
            throw new InvalidProductTransitionException('Products with order references cannot return to draft.');
        }

        $product->status = $newStatus;
        if ($newStatus->value === 'active' && $product->published_at === null) {
            $product->published_at = now();
        }
        $product->save();
        event(new ProductStatusChanged($product, $current, $newStatus->value));
    }

    public function delete(Product $product): void
    {
        if ($this->value($product->status) !== 'draft' || $this->hasOrderReferences($product)) {
            throw new InvalidProductTransitionException('Only unreferenced draft products may be deleted.');
        }
        $product->delete();
    }

    /** @param list<array<string, mixed>> $options */
    private function syncOptions(Product $product, array $options): void
    {
        if (count($options) > 3) {
            throw new \InvalidArgumentException('A product may have at most three options.');
        }
        $product->options()->delete();
        foreach (array_values($options) as $position => $optionData) {
            $option = $product->options()->create(['name' => $optionData['name'], 'position' => $position]);
            foreach (array_values((array) ($optionData['values'] ?? [])) as $valuePosition => $value) {
                $option->values()->create(['value' => is_array($value) ? $value['value'] : $value, 'position' => $valuePosition]);
            }
        }
    }

    private function hasOrderReferences(Product $product): bool
    {
        return OrderLine::query()->where('product_id', $product->id)
            ->orWhereIn('variant_id', ProductVariant::query()->where('product_id', $product->id)->select('id'))
            ->exists();
    }

    private function value(mixed $value): string
    {
        return $value instanceof BackedEnum ? (string) $value->value : (string) $value;
    }
}
<?php

namespace App\Models;

use App\Enums\VariantStatus;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasOne;

class ProductVariant extends Model
{
    use HasFactory;

    protected $fillable = [
        'product_id', 'sku', 'barcode', 'price_amount', 'compare_at_amount', 'currency', 'weight_g',
        'requires_shipping', 'is_default', 'position', 'status',
    ];

    protected function casts(): array
    {
        return [
            'price_amount' => 'integer',
            'compare_at_amount' => 'integer',
            'weight_g' => 'integer',
            'requires_shipping' => 'boolean',
            'is_default' => 'boolean',
            'position' => 'integer',
            'status' => VariantStatus::class,
        ];
    }

    public function product(): BelongsTo
    {
        return $this->belongsTo(Product::class);
    }

    public function optionValues(): BelongsToMany
    {
        return $this->belongsToMany(ProductOptionValue::class, 'variant_option_values', 'variant_id', 'product_option_value_id')
            ->using(VariantOptionValue::class);
    }

    public function inventoryItem(): HasOne
    {
        return $this->hasOne(InventoryItem::class, 'variant_id');
    }

    public function cartLines(): HasMany
    {
        return $this->hasMany(CartLine::class, 'variant_id');
    }

    public function orderLines(): HasMany
    {
        return $this->hasMany(OrderLine::class, 'variant_id');
    }
}
<?php

namespace App\Models;

use App\Enums\InventoryPolicy;
use App\Models\Concerns\BelongsToStore;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class InventoryItem extends Model
{
    use BelongsToStore, HasFactory;

    public $timestamps = false;

    protected $fillable = ['store_id', 'variant_id', 'quantity_on_hand', 'quantity_reserved', 'policy'];

    protected function casts(): array
    {
        return [
            'quantity_on_hand' => 'integer',
            'quantity_reserved' => 'integer',
            'policy' => InventoryPolicy::class,
        ];
    }

    public function variant(): BelongsTo
    {
        return $this->belongsTo(ProductVariant::class, 'variant_id');
    }

    public function availableQuantity(): int
    {
        return $this->quantity_on_hand - $this->quantity_reserved;
    }
}
tests/Pest.php:113:    $variant = ProductVariant::factory()->for($product)->create([
database/seeders/OrderSeeder.php:74:        $product = Product::withoutGlobalScopes()->where('store_id', $store->id)->where('handle', $productHandle)->with('variants.inventoryItem')->firstOrFail();
database/seeders/OrderSeeder.php:87:        if ($financial === 'pending' && $variant->inventoryItem !== null) {
database/seeders/OrderSeeder.php:88:            $variant->inventoryItem->increment('quantity_reserved', $quantity);
database/seeders/ProductSeeder.php:83:                $variant = $product->variants()->create([
app/Livewire/Storefront/Concerns/QuickAddsProducts.php:13:        $variant = ProductVariant::query()
app/Livewire/Storefront/Concerns/ManagesCart.php:36:                'lines.variant.inventoryItem',
app/Livewire/Storefront/Collections/Show.php:90:            ->with(['variants.inventoryItem', 'media'])
app/Livewire/Storefront/Collections/Show.php:119:            $query->whereHas('variants.inventoryItem', fn (Builder $builder) => $builder
app/Services/VariantMatrixService.php:17:            $product->load(['options.values', 'variants.optionValues', 'variants.inventoryItem']);
app/Services/VariantMatrixService.php:32:                $variant = $product->variants()->create([
app/Http/Controllers/Api/Admin/ProductController.php:39:            ->with(['variants.inventoryItem', 'media', 'collections'])->orderBy($sort, $direction)->paginate($validated['per_page'] ?? 25);
app/Http/Controllers/Api/Admin/ProductController.php:54:        return response()->json(['data' => $this->product($storeId, $productId)->load(['options.values', 'variants.optionValues', 'variants.inventoryItem', 'media', 'collections'])]);
app/Livewire/Storefront/FeaturedProducts.php:28:            ->with(['variants.inventoryItem', 'media'])
app/Livewire/Storefront/Products/Show.php:36:                'variants' => fn ($query) => $query->where('status', 'active')->with(['inventoryItem', 'optionValues.option'])->orderBy('position'),
app/Livewire/Storefront/Products/Show.php:85:        $inventory = $this->selectedVariant?->inventoryItem;
app/Livewire/Storefront/Search/Index.php:102:        $products->loadMissing(['variants.inventoryItem', 'media']);
app/Livewire/Storefront/Search/Index.php:110:                    $inventory = $variant->inventoryItem;
app/Services/ProductService.php:41:                $variant = $product->variants()->create([
app/Services/ProductService.php:59:            return $product->refresh()->load(['variants.inventoryItem', 'options.values']);
app/Services/ProductService.php:83:            return $product->refresh()->load(['variants.inventoryItem', 'options.values']);
app/Services/ProductService.php:143:            ->orWhereIn('variant_id', ProductVariant::query()->where('product_id', $product->id)->select('id'))
app/Livewire/Admin/Products/Form.php:42:            $this->product = $product->load(['options.values', 'variants.inventoryItem', 'variants.optionValues.option', 'media', 'collections']);
app/Livewire/Admin/Products/Form.php:56:                'compareAtPrice' => $variant->compare_at_amount, 'quantity' => (int) ($variant->inventoryItem?->quantity_on_hand ?? 0),
app/Livewire/Admin/Products/Form.php:158:        $this->product->load(['variants.optionValues.option', 'variants.inventoryItem']);
app/Livewire/Admin/Products/Form.php:168:            $variant->inventoryItem()->updateOrCreate([], ['store_id' => $this->currentStore()->id, 'quantity_on_hand' => (int) $row['quantity'], 'quantity_reserved' => (int) ($variant->inventoryItem?->quantity_reserved ?? 0), 'policy' => $variant->inventoryItem?->policy ?? 'deny']);
app/Livewire/Admin/Products/Index.php:111:            ->with(['variants.inventoryItem', 'media' => fn ($query) => $query->orderBy('position')->limit(1)])
app/Services/CartService.php:69:            : ProductVariant::withoutGlobalScopes()->with(['product', 'inventoryItem'])->findOrFail($variant);
app/Services/CartService.php:70:        $variant->loadMissing(['product', 'inventoryItem']);
app/Services/CartService.php:84:            if ($variant->inventoryItem !== null && ! $this->inventory->checkAvailability($variant->inventoryItem, $newQuantity)) {
app/Services/CartService.php:108:            $line = CartLine::query()->where('cart_id', $cart->id)->with('variant.inventoryItem')->findOrFail($lineId);
app/Services/CartService.php:110:            if ($line->variant->inventoryItem !== null && ! $this->inventory->checkAvailability($line->variant->inventoryItem, $quantity)) {
app/Services/OrderService.php:80:                if (! $pending && $variant->inventoryItem !== null) {
app/Services/OrderService.php:81:                    $this->inventory->commit($variant->inventoryItem, (int) $line->quantity);
app/Services/OrderService.php:135:            $order->load('lines.variant.inventoryItem');
app/Services/OrderService.php:137:                if ($line->variant?->inventoryItem !== null) {
app/Services/OrderService.php:138:                    $this->inventory->commit($line->variant->inventoryItem, (int) $line->quantity);
app/Services/OrderService.php:156:                $order->load('lines.variant.inventoryItem');
app/Services/OrderService.php:158:                    if ($line->variant?->inventoryItem !== null) {
app/Services/OrderService.php:159:                        $this->inventory->release($line->variant->inventoryItem, (int) $line->quantity);
app/Services/RefundService.php:53:                $order->load('lines.variant.inventoryItem');
app/Services/RefundService.php:56:                    if ($quantity > 0 && $line->variant?->inventoryItem !== null) {
app/Services/RefundService.php:57:                        $this->inventory->restock($line->variant->inventoryItem, min($quantity, (int) $line->quantity));
app/Models/VariantOptionValue.php:20:        return $this->belongsTo(ProductVariant::class, 'variant_id');
app/Services/CheckoutService.php:110:        $checkout->loadMissing('cart.lines.variant.inventoryItem');
app/Services/CheckoutService.php:114:                if ($line->variant->inventoryItem !== null) {
app/Services/CheckoutService.php:115:                    $this->inventory->reserve($line->variant->inventoryItem, (int) $line->quantity);
app/Services/CheckoutService.php:164:        $checkout->loadMissing('cart.lines.variant.inventoryItem');
app/Services/CheckoutService.php:166:            if ($line->variant->inventoryItem !== null) {
app/Services/CheckoutService.php:167:                $this->inventory->release($line->variant->inventoryItem, (int) $line->quantity);
app/Models/Store.php:63:    public function inventoryItems(): HasMany
app/Models/InventoryItem.php:30:        return $this->belongsTo(ProductVariant::class, 'variant_id');
app/Models/ProductOptionValue.php:30:        return $this->belongsToMany(ProductVariant::class, 'variant_option_values', 'product_option_value_id', 'variant_id')
app/Models/ProductVariant.php:46:    public function inventoryItem(): HasOne
app/Models/Product.php:36:        return $this->hasMany(ProductVariant::class)->orderBy('position');
app/Models/CartLine.php:38:        return $this->belongsTo(ProductVariant::class, 'variant_id');
app/Models/OrderLine.php:44:        return $this->belongsTo(ProductVariant::class, 'variant_id');


exec

Input:
const r = await tools.exec_command({
  cmd: "sed -n '1,300p' app/Services/VariantMatrixService.php && rg -n \"variant|option\" specs/05-BUSINESS-LOGIC.md | head -120 && sed -n '1,220p' database/factories/ProductVariantFactory.php && sed -n '60,125p' database/seeders/ProductSeeder.php",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 10000,
  max_output_tokens: 26000
});
text(r.output);


Script completed
Wall time 0.1 seconds
Output:

<?php

namespace App\Services;

use App\Models\InventoryItem;
use App\Models\OrderLine;
use App\Models\Product;
use App\Models\ProductVariant;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\DB;

final class VariantMatrixService
{
    public function rebuildMatrix(Product $product): void
    {
        DB::transaction(function () use ($product): void {
            $product->load(['options.values', 'variants.optionValues', 'variants.inventoryItem']);
            $groups = $product->options->sortBy('position')->map(fn ($option) => $option->values->sortBy('position')->pluck('id')->all())->all();
            $combinations = $groups === [] ? [[]] : $this->cartesian(array_values($groups));
            $existing = $product->variants->keyBy(fn (ProductVariant $variant): string => $this->key($variant->optionValues->modelKeys()));
            $template = $product->variants->first();
            $desiredKeys = [];

            foreach ($combinations as $position => $combination) {
                $key = $this->key($combination);
                $desiredKeys[] = $key;
                if ($existing->has($key)) {
                    $existing[$key]->update(['position' => $position, 'status' => 'active', 'is_default' => $groups === []]);
                    continue;
                }

                $variant = $product->variants()->create([
                    'sku' => null,
                    'barcode' => null,
                    'price_amount' => (int) ($template?->price_amount ?? 0),
                    'compare_at_amount' => $template?->compare_at_amount,
                    'currency' => $template?->currency ?? $product->store?->default_currency ?? 'USD',
                    'weight_g' => $template?->weight_g,
                    'requires_shipping' => $template?->requires_shipping ?? true,
                    'is_default' => $groups === [],
                    'position' => $position,
                    'status' => 'active',
                ]);
                if ($combination !== []) {
                    $variant->optionValues()->sync($combination);
                }
                InventoryItem::withoutGlobalScopes()->create([
                    'store_id' => $product->store_id,
                    'variant_id' => $variant->id,
                    'quantity_on_hand' => 0,
                    'quantity_reserved' => 0,
                    'policy' => 'deny',
                ]);
            }

            foreach ($existing as $key => $variant) {
                if (in_array($key, $desiredKeys, true)) {
                    continue;
                }
                if (OrderLine::query()->where('variant_id', $variant->id)->exists()) {
                    $variant->update(['status' => 'archived']);
                } else {
                    $variant->delete();
                }
            }
        });
    }

    /** @param list<list<int>> $groups @return list<list<int>> */
    private function cartesian(array $groups): array
    {
        $result = [[]];
        foreach ($groups as $group) {
            $next = [];
            foreach ($result as $prefix) {
                foreach ($group as $value) {
                    $next[] = [...$prefix, $value];
                }
            }
            $result = $next;
        }

        return $result;
    }

    /** @param array<int, int|string> $ids */
    private function key(array $ids): string
    {
        sort($ids);

        return implode(':', $ids);
    }
}
120:    Draft --> Active : Publish (requires variant with price > 0, title not empty)
132:| Draft | Active | At least one variant with `price_amount > 0`; product `title` is not empty |
136:| Active | Draft | **BLOCKED** if any `order_lines` reference variants of this product |
137:| Archived | Draft | **BLOCKED** if any `order_lines` reference variants of this product |
152:- A product has 0 to 3 options (e.g., Size, Color, Material), stored in `product_options`.
153:- Each option has 1 or more values, stored in `product_option_values`.
154:- Variants represent the cartesian product of option values (or a manually curated subset).
155:- When a product has no options, a single "Default" variant is auto-created with `is_default = 1`.
157:**Matrix rebuild logic (when options change):**
161:    current_option_values = load all option values grouped by option
162:    desired_combos = cartesianProduct(current_option_values)
163:    existing_variants = load all variants with their option value sets
166:        IF combo matches an existing variant's option value set:
167:            SKIP (preserve existing variant - prices, SKUs, inventory intact)
169:            CREATE new variant with default pricing from first existing variant
171:    FOR EACH existing_variant NOT matching any desired combo:
172:        IF variant has order_line references:
173:            ARCHIVE variant (set status = 'archived')
175:            DELETE variant
184:- Null or empty SKU values are exempt from the uniqueness check (multiple variants may have no SKU).
185:- Validation: query all variants belonging to products in the same store, check for SKU collision excluding the current variant's ID.
203:Each `product_variant` has exactly one `inventory_item` record (created automatically when the variant is created).
213:Per-variant policy stored in `inventory_items.policy`:
268:The guest cart is bound to the session using the key `cart_id`. When a guest visits the storefront, a cart is created on first add-to-cart and the cart's ID is stored in `session('cart_id')`. On customer login, if a session cart exists, it is merged with any existing customer cart (the session cart's items are added to the customer cart, preferring the higher quantity for duplicate variants). After merge, the session key is cleared.
275:        existingLine = customerCart.findLineByVariant(line.variant_id)
288:- Accepts: store, optional customer
297:5. If the variant already exists in the cart, increment existing line quantity instead of creating a duplicate.
298:6. Set `unit_price_amount` from the variant's `price_amount`.
477:- **Skip condition:** If no cart lines have `requires_shipping = true` on their variant, skip this step. Set status to `shipping_selected` with shipping_method_id = null and shipping_amount = 0.
547:       - title_snapshot = product title + variant option labels
548:       - sku_snapshot = variant SKU at time of purchase
559:           CALL InventoryService.commit(variant, quantity)
878:        IF line.variant.requires_shipping = true:
879:            totalWeight += line.variant.weight_g * line.quantity
913:- If no line in the cart has `requires_shipping = true` on its variant, the shipping step is skipped entirely.
1162:           CALL InventoryService.restock(variant, quantity)
1268:1. Check if **all** order lines reference variants with `requires_shipping = false` (digital products).
1464:| `properties` | object | No | Event-specific data (product_id, variant_id, etc.) |
1595:| `OrderRefunded` | Send refund notification email, dispatch webhooks (`order.refunded`), optionally restock |
1639:| VariantMatrixService | `App\Services` | Option/variant matrix management |
1709:| ShippingRate | id (int), name (string), amount (int, cents), type (string) | Calculated shipping rate option |
<?php

namespace Database\Factories;

use App\Models\Product;
use Illuminate\Database\Eloquent\Factories\Factory;

class ProductVariantFactory extends Factory
{
    public function definition(): array
    {
        return [
            'product_id' => Product::factory(),
            'sku' => fake()->unique()->bothify('SKU-####-???'),
            'barcode' => fake()->ean13(),
            'price_amount' => fake()->numberBetween(999, 19999),
            'compare_at_amount' => null,
            'currency' => 'EUR',
            'weight_g' => fake()->numberBetween(100, 5000),
            'requires_shipping' => true,
            'is_default' => false,
            'position' => 0,
            'status' => 'active',
        ];
    }

    public function onSale(): static
    {
        return $this->state(fn (array $attributes) => [
            'price_amount' => fake()->numberBetween(9999, 19999),
            'compare_at_amount' => fake()->numberBetween(20000, 39999),
        ]);
    }

    public function digital(): static
    {
        return $this->state(fn (array $attributes) => ['requires_shipping' => false, 'weight_g' => 0]);
    }

    public function default(): static
    {
        return $this->state(fn (array $attributes) => ['is_default' => true]);
    }

    public function archived(): static
    {
        return $this->state(fn (array $attributes) => ['status' => 'archived']);
    }
}
        [$title, $handle, $vendor, $type, $tags, $prices, $compareAt, $weight, $inventory, $policy, $requiresShipping, $options, $collections, $description, $status] = array_pad($definition, 16, 'active');
        $product = Product::withoutGlobalScopes()->updateOrCreate(['store_id' => $store->id, 'handle' => $handle], [
            'title' => $title,
            'status' => $status,
            'description_html' => '<p>'.$description.'</p>',
            'vendor' => $vendor,
            'product_type' => $type,
            'tags' => $tags,
            'published_at' => $status === 'draft' ? null : ($status === 'archived' ? now()->subMonths(6) : now()),
        ]);

        if (! $product->variants()->exists()) {
            $groups = [];
            foreach ($options as $optionPosition => $values) {
                $option = $product->options()->create(['name' => $optionPosition, 'position' => count($groups)]);
                $groups[] = collect($values)->values()->map(fn (string $value, int $valuePosition) => $option->values()->create(['value' => $value, 'position' => $valuePosition]))->all();
            }
            $combinations = $groups === [] ? [[]] : $this->cartesian($groups);
            foreach ($combinations as $position => $combination) {
                $price = is_array($prices) ? (int) ($prices[$position] ?? end($prices)) : (int) $prices;
                $sku = $handle === 'gift-card'
                    ? ['ACME-GIFT-25', 'ACME-GIFT-50', 'ACME-GIFT-100'][$position]
                    : strtoupper('ACME-'.substr(preg_replace('/[^a-z0-9]/', '', $handle), 0, 8).'-'.($position + 1));
                $variant = $product->variants()->create([
                    'sku' => $sku,
                    'barcode' => null,
                    'price_amount' => $price,
                    'compare_at_amount' => $compareAt,
                    'currency' => 'EUR',
                    'weight_g' => $weight,
                    'requires_shipping' => $requiresShipping,
                    'is_default' => $position === 0,
                    'position' => $position,
                    'status' => 'active',
                ]);
                if ($combination !== []) {
                    $variant->optionValues()->sync(collect($combination)->pluck('id')->all());
                }
                InventoryItem::withoutGlobalScopes()->create([
                    'store_id' => $store->id,
                    'variant_id' => $variant->id,
                    'quantity_on_hand' => $inventory,
                    'quantity_reserved' => 0,
                    'policy' => $policy,
                ]);
            }
        }

        $collectionIds = Collection::withoutGlobalScopes()->where('store_id', $store->id)->whereIn('handle', $collections)->pluck('id', 'handle');
        $sync = [];
        foreach ($collections as $position => $collectionHandle) {
            if (isset($collectionIds[$collectionHandle])) {
                $sync[$collectionIds[$collectionHandle]] = ['position' => $productPosition];
            }
        }
        $product->collections()->sync($sync);
    }

    /** @param list<array<int, mixed>> $groups @return list<list<mixed>> */
    private function cartesian(array $groups): array
    {
        $result = [[]];
        foreach ($groups as $group) {
            $next = [];
            foreach ($result as $prefix) {
                foreach ($group as $value) {


Input:
const r = await tools.exec_command({
  cmd: "sed -n '90,145p' tests/Pest.php && rg -n \"InventoryItem::.*create|inventoryItem\\(\\)->create|inventory_items\" tests app database/seeders | head -160 && rg -n \"product_option_values|foreign.*variant|inventory_items\" database/migrations/2026_*.php",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 10000,
  max_output_tokens: 16000
});
text(r.output);


Script completed
Wall time 0.1 seconds
Output:

 * Create an active SKU with explicit inventory. Factories intentionally do not
 * hide whether inventory records are created by a service or by the caller.
 *
 * @param array<string, mixed> $productAttributes
 * @param array<string, mixed> $variantAttributes
 * @param array<string, mixed> $inventoryAttributes
 * @return array{product: Product, variant: ProductVariant, inventory: InventoryItem}
 */
function makeSellableVariant(
    Store $store,
    array $productAttributes = [],
    array $variantAttributes = [],
    array $inventoryAttributes = [],
): array {
    bindStore($store);
    $title = (string) ($productAttributes['title'] ?? 'Product '.Str::lower(Str::random(8)));
    $product = Product::factory()->for($store)->create([
        'title' => $title,
        'handle' => $productAttributes['handle'] ?? Str::slug($title).'-'.Str::lower(Str::random(5)),
        'status' => 'active',
        'published_at' => now(),
        ...$productAttributes,
    ]);
    $variant = ProductVariant::factory()->for($product)->create([
        'sku' => $variantAttributes['sku'] ?? 'SKU-'.Str::upper(Str::random(10)),
        'price_amount' => 2500,
        'currency' => $store->default_currency,
        'requires_shipping' => true,
        'status' => 'active',
        ...$variantAttributes,
    ]);
    $inventory = InventoryItem::withoutGlobalScopes()->create([
        'store_id' => $store->id,
        'variant_id' => $variant->id,
        'quantity_on_hand' => 20,
        'quantity_reserved' => 0,
        'policy' => 'deny',
        ...$inventoryAttributes,
    ]);

    return compact('product', 'variant', 'inventory');
}

/**
 * @return array{cart: Cart, line: \App\Models\CartLine}
 */
function makeCartWithLine(Store $store, ProductVariant $variant, int $quantity = 1): array
{
    /** @var CartService $service */
    $service = app(CartService::class);
    $cart = $service->create($store);
    $line = $service->addLine($cart, $variant, $quantity, 1);

    return compact('cart', 'line');
}

tests/Pest.php:121:    $inventory = InventoryItem::withoutGlobalScopes()->create([
database/seeders/ProductSeeder.php:98:                InventoryItem::withoutGlobalScopes()->create([
app/Services/VariantMatrixService.php:47:                InventoryItem::withoutGlobalScopes()->create([
database/migrations/2026_01_01_000500_create_order_detail_tables.php:12:            $table->foreignId('variant_id')->constrained('product_variants')->cascadeOnDelete();
database/migrations/2026_01_01_000500_create_order_detail_tables.php:22:            $table->foreignId('variant_id')->nullable()->constrained('product_variants')->nullOnDelete();
database/migrations/2026_01_01_000400_create_transaction_tables.php:11:        Schema::create('product_option_values', function (Blueprint $table) {
database/migrations/2026_01_01_000400_create_transaction_tables.php:16:            $table->index('product_option_id', 'idx_product_option_values_option_id');
database/migrations/2026_01_01_000400_create_transaction_tables.php:17:            $table->unique(['product_option_id', 'position'], 'idx_product_option_values_option_position');
database/migrations/2026_01_01_000400_create_transaction_tables.php:20:        Schema::create('inventory_items', function (Blueprint $table) {
database/migrations/2026_01_01_000400_create_transaction_tables.php:23:            $table->foreignId('variant_id')->constrained('product_variants')->cascadeOnDelete();
database/migrations/2026_01_01_000400_create_transaction_tables.php:27:            $table->unique('variant_id', 'idx_inventory_items_variant_id');
database/migrations/2026_01_01_000400_create_transaction_tables.php:28:            $table->index('store_id', 'idx_inventory_items_store_id');
database/migrations/2026_01_01_000400_create_transaction_tables.php:34:            $table->foreignId('variant_id')->constrained('product_variants')->cascadeOnDelete();
database/migrations/2026_01_01_000400_create_transaction_tables.php:152:        Schema::dropIfExists('inventory_items');
database/migrations/2026_01_01_000400_create_transaction_tables.php:153:        Schema::dropIfExists('product_option_values');


Input:
const r = await tools.exec_command({
  cmd: "sed -n '1,180p' database/migrations/2026_01_01_000300_create_dependent_tenant_tables.php && sed -n '1,75p' database/migrations/2026_01_01_000400_create_transaction_tables.php && sed -n '140,200p' specs/05-BUSINESS-LOGIC.md",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 10000,
  max_output_tokens: 14000
});
text(r.output);


Script completed
Wall time 0.1 seconds
Output:

sed: database/migrations/2026_01_01_000300_create_dependent_tenant_tables.php: No such file or directory


Input:
const r = await tools.exec_command({
  cmd: "ls database/migrations && rg -n \"Schema::create\\('product_options'|Schema::create\\('product_variants'\" database/migrations && sed -n '140,215p' specs/05-BUSINESS-LOGIC.md",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 10000,
  max_output_tokens: 14000
});
text(r.output);


Script completed
Wall time 0.1 seconds
Output:

0001_01_01_000000_create_users_table.php
0001_01_01_000001_create_cache_table.php
0001_01_01_000002_create_jobs_table.php
2025_08_14_170933_add_two_factor_columns_to_users_table.php
2026_01_01_000100_create_foundation_tables.php
2026_01_01_000200_create_tenant_root_tables.php
2026_01_01_000300_create_dependent_tables.php
2026_01_01_000400_create_transaction_tables.php
2026_01_01_000500_create_order_detail_tables.php
2026_01_01_000600_create_refund_and_fulfillment_line_tables.php
2026_01_01_000700_create_products_fts_table.php
database/migrations/2026_01_01_000300_create_dependent_tables.php:11:        Schema::create('product_options', function (Blueprint $table) {
database/migrations/2026_01_01_000300_create_dependent_tables.php:20:        Schema::create('product_variants', function (Blueprint $table) {
- Only `draft` products with zero `order_lines` references may be hard-deleted.
- Products with existing order references must be archived, never deleted, to preserve order history integrity.

**Service:** `App\Services\ProductService`
- Method `transitionStatus(product, newStatus)` validates the current state, checks preconditions, throws `InvalidProductTransitionException` on failure.
- On activation: set `published_at` to current time if not already set.
- Dispatch `ProductStatusChanged` event after successful transition.

### 2.2 Variant and Option Matrix

**Rules:**

- A product has 0 to 3 options (e.g., Size, Color, Material), stored in `product_options`.
- Each option has 1 or more values, stored in `product_option_values`.
- Variants represent the cartesian product of option values (or a manually curated subset).
- When a product has no options, a single "Default" variant is auto-created with `is_default = 1`.

**Matrix rebuild logic (when options change):**

```
PROCEDURE rebuildMatrix(product):
    current_option_values = load all option values grouped by option
    desired_combos = cartesianProduct(current_option_values)
    existing_variants = load all variants with their option value sets

    FOR EACH combo IN desired_combos:
        IF combo matches an existing variant's option value set:
            SKIP (preserve existing variant - prices, SKUs, inventory intact)
        ELSE:
            CREATE new variant with default pricing from first existing variant

    FOR EACH existing_variant NOT matching any desired combo:
        IF variant has order_line references:
            ARCHIVE variant (set status = 'archived')
        ELSE:
            DELETE variant
```

**Service:** `App\Services\VariantMatrixService`

### 2.3 SKU Uniqueness

- Combination of store_id (derived through the product's store) and SKU must be unique.
- Enforced at application level before save.
- Null or empty SKU values are exempt from the uniqueness check (multiple variants may have no SKU).
- Validation: query all variants belonging to products in the same store, check for SKU collision excluding the current variant's ID.

### 2.4 Handle/Slug Generation

**Helper class:** `App\Support\HandleGenerator`

- Auto-generate from the title by converting to a URL-safe slug (lowercase, hyphens for spaces, strip special characters).
- Uniqueness enforced per store via the database unique index on `(store_id, handle)`.
- On collision, append incrementing suffix: `my-product`, `my-product-1`, `my-product-2`, etc.
- Merchants can manually edit the handle; on save, re-validate uniqueness.
- Same logic applies to collections and pages.

---

## 3. Inventory Management

### 3.1 Tracking Model

Each `product_variant` has exactly one `inventory_item` record (created automatically when the variant is created).

| Field | Description |
|---|---|
| `quantity_on_hand` | Total physical stock count |
| `quantity_reserved` | Units held for active checkouts or pending orders |
| **Available** (computed) | `quantity_on_hand - quantity_reserved` |

### 3.2 Inventory Policy

Per-variant policy stored in `inventory_items.policy`:

| Policy | Behavior |


Input:
const r = await tools.exec_command({
  cmd: "sed -n '1,90p' database/migrations/2026_01_01_000300_create_dependent_tables.php && rg -n \"SKU|sku.*unique|ProductVariant\" app/Rules app/Observers app/Services app/Providers 2>/dev/null",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 10000,
  max_output_tokens: 12000
});
text(r.output);


Script completed
Wall time 0.1 seconds
Output:

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    public function up(): void
    {
        Schema::create('product_options', function (Blueprint $table) {
            $table->id();
            $table->foreignId('product_id')->constrained()->cascadeOnDelete();
            $table->string('name');
            $table->integer('position')->default(0);
            $table->index('product_id', 'idx_product_options_product_id');
            $table->unique(['product_id', 'position'], 'idx_product_options_product_position');
        });

        Schema::create('product_variants', function (Blueprint $table) {
            $table->id();
            $table->foreignId('product_id')->constrained()->cascadeOnDelete();
            $table->string('sku')->nullable();
            $table->string('barcode')->nullable();
            $table->integer('price_amount')->default(0);
            $table->integer('compare_at_amount')->nullable();
            $table->string('currency')->default('USD');
            $table->integer('weight_g')->nullable();
            $table->boolean('requires_shipping')->default(true);
            $table->boolean('is_default')->default(false);
            $table->integer('position')->default(0);
            $table->enum('status', ['active', 'archived'])->default('active');
            $table->timestamps();
            $table->index('product_id', 'idx_product_variants_product_id');
            $table->index('sku', 'idx_product_variants_sku');
            $table->index('barcode', 'idx_product_variants_barcode');
            $table->index(['product_id', 'position'], 'idx_product_variants_product_position');
            $table->index(['product_id', 'is_default'], 'idx_product_variants_product_default');
        });

        Schema::create('product_media', function (Blueprint $table) {
            $table->id();
            $table->foreignId('product_id')->constrained()->cascadeOnDelete();
            $table->enum('type', ['image', 'video'])->default('image');
            $table->string('storage_key');
            $table->string('alt_text')->nullable();
            $table->integer('width')->nullable();
            $table->integer('height')->nullable();
            $table->string('mime_type')->nullable();
            $table->integer('byte_size')->nullable();
            $table->integer('position')->default(0);
            $table->enum('status', ['processing', 'ready', 'failed'])->default('processing');
            $table->timestamp('created_at')->nullable();
            $table->index('product_id', 'idx_product_media_product_id');
            $table->index(['product_id', 'position'], 'idx_product_media_product_position');
            $table->index('status', 'idx_product_media_status');
        });

        Schema::create('collection_products', function (Blueprint $table) {
            $table->foreignId('collection_id')->constrained()->cascadeOnDelete();
            $table->foreignId('product_id')->constrained()->cascadeOnDelete();
            $table->integer('position')->default(0);
            $table->primary(['collection_id', 'product_id']);
            $table->index('product_id', 'idx_collection_products_product_id');
            $table->index(['collection_id', 'position'], 'idx_collection_products_position');
        });

        Schema::create('customer_addresses', function (Blueprint $table) {
            $table->id();
            $table->foreignId('customer_id')->constrained()->cascadeOnDelete();
            $table->string('label')->nullable();
            $table->text('address_json')->default('{}');
            $table->boolean('is_default')->default(false);
            $table->index('customer_id', 'idx_customer_addresses_customer_id');
            $table->index(['customer_id', 'is_default'], 'idx_customer_addresses_default');
        });

        Schema::create('carts', function (Blueprint $table) {
            $table->id();
            $table->foreignId('store_id')->constrained()->cascadeOnDelete();
            $table->foreignId('customer_id')->nullable()->constrained()->nullOnDelete();
            $table->string('currency')->default('USD');
            $table->integer('cart_version')->default(1);
            $table->enum('status', ['active', 'converted', 'abandoned'])->default('active');
            $table->timestamps();
            $table->index('store_id', 'idx_carts_store_id');
            $table->index('customer_id', 'idx_carts_customer_id');
            $table->index(['store_id', 'status'], 'idx_carts_store_status');
        });

app/Services/VariantMatrixService.php:8:use App\Models\ProductVariant;
app/Services/VariantMatrixService.php:20:            $existing = $product->variants->keyBy(fn (ProductVariant $variant): string => $this->key($variant->optionValues->modelKeys()));
app/Services/ProductService.php:11:use App\Models\ProductVariant;
app/Services/ProductService.php:143:            ->orWhereIn('variant_id', ProductVariant::query()->where('product_id', $product->id)->select('id'))
app/Services/CartService.php:10:use App\Models\ProductVariant;
app/Services/CartService.php:63:    public function addLine(Cart $cart, int|ProductVariant $variant, int $quantity = 1, ?int $expectedVersion = null): CartLine
app/Services/CartService.php:67:        $variant = $variant instanceof ProductVariant
app/Services/CartService.php:69:            : ProductVariant::withoutGlobalScopes()->with(['product', 'inventoryItem'])->findOrFail($variant);


Input:
const patch = "*** Begin Patch\n*** Update File: /Users/fabianwesner/Herd/shop/app/Models/ProductVariant.php\n@@\n namespace App\\Models;\n \n use App\\Enums\\VariantStatus;\n+use Illuminate\\Database\\Eloquent\\Builder;\n use Illuminate\\Database\\Eloquent\\Factories\\HasFactory;\n use Illuminate\\Database\\Eloquent\\Model;\n@@\n use Illuminate\\Database\\Eloquent\\Relations\\HasMany;\n use Illuminate\\Database\\Eloquent\\Relations\\HasOne;\n+use Illuminate\\Validation\\ValidationException;\n@@\n class ProductVariant extends Model\n {\n     use HasFactory;\n+\n+    protected static function booted(): void\n+    {\n+        static::saving(function (ProductVariant $variant): void {\n+            $sku = trim((string) $variant->sku);\n+            if ($sku === '') {\n+                return;\n+            }\n+\n+            $storeId = Product::withoutGlobalScopes()->whereKey($variant->product_id)->value('store_id');\n+            $duplicateExists = static::query()\n+                ->where('sku', $sku)\n+                ->when($variant->exists, fn (Builder $query) => $query->whereKeyNot($variant->getKey()))\n+                ->whereHas('product', fn (Builder $query) => $query->withoutGlobalScopes()->where('store_id', $storeId))\n+                ->exists();\n+\n+            if ($duplicateExists) {\n+                throw ValidationException::withMessages(['sku' => 'The SKU has already been taken for this store.']);\n+            }\n+\n+            $variant->sku = $sku;\n+        });\n+\n+        static::created(function (ProductVariant $variant): void {\n+            $storeId = Product::withoutGlobalScopes()->whereKey($variant->product_id)->value('store_id');\n+\n+            InventoryItem::withoutGlobalScopes()->firstOrCreate(\n+                ['variant_id' => $variant->getKey()],\n+                [\n+                    'store_id' => $storeId,\n+                    'quantity_on_hand' => 0,\n+                    'quantity_reserved' => 0,\n+                    'policy' => 'deny',\n+                ],\n+            );\n+        });\n+    }\n*** Update File: /Users/fabianwesner/Herd/shop/app/Services/ProductService.php\n@@\n-                InventoryItem::withoutGlobalScopes()->firstOrCreate(\n+                InventoryItem::withoutGlobalScopes()->updateOrCreate(\n                     ['variant_id' => $variant->id],\n                     ['store_id' => $store->id, 'quantity_on_hand' => (int) ($variantData['quantity_on_hand'] ?? 0), 'quantity_reserved' => 0, 'policy' => $variantData['policy'] ?? 'deny'],\n                 );\n@@\n     private function syncOptions(Product $product, array $options): void\n     {\n         if (count($options) > 3) {\n             throw new \\InvalidArgumentException('A product may have at most three options.');\n         }\n-        $product->options()->delete();\n+\n+        $existingOptions = $product->options()->with('values')->get();\n+        $keptOptionIds = [];\n+\n         foreach (array_values($options) as $position => $optionData) {\n-            $option = $product->options()->create(['name' => $optionData['name'], 'position' => $position]);\n-            foreach (array_values((array) ($optionData['values'] ?? [])) as $valuePosition => $value) {\n-                $option->values()->create(['value' => is_array($value) ? $value['value'] : $value, 'position' => $valuePosition]);\n+            $name = trim((string) ($optionData['name'] ?? ''));\n+            $values = array_values((array) ($optionData['values'] ?? []));\n+            if ($name === '' || $values === []) {\n+                throw new \\InvalidArgumentException('Every product option needs a name and at least one value.');\n+            }\n+\n+            $option = isset($optionData['id'])\n+                ? $existingOptions->firstWhere('id', (int) $optionData['id'])\n+                : $existingOptions->first(fn ($candidate) => mb_strtolower($candidate->name) === mb_strtolower($name));\n+            $option ??= $product->options()->make();\n+            $option->fill(['name' => $name, 'position' => $position])->save();\n+            $keptOptionIds[] = $option->id;\n+\n+            $existingValues = $option->values;\n+            $keptValueIds = [];\n+            foreach ($values as $valuePosition => $valueData) {\n+                $value = trim((string) (is_array($valueData) ? ($valueData['value'] ?? '') : $valueData));\n+                if ($value === '') {\n+                    throw new \\InvalidArgumentException('Product option values may not be empty.');\n+                }\n+\n+                $optionValue = is_array($valueData) && isset($valueData['id'])\n+                    ? $existingValues->firstWhere('id', (int) $valueData['id'])\n+                    : $existingValues->first(fn ($candidate) => mb_strtolower($candidate->value) === mb_strtolower($value));\n+                $optionValue ??= $option->values()->make();\n+                $optionValue->fill(['value' => $value, 'position' => $valuePosition])->save();\n+                $keptValueIds[] = $optionValue->id;\n             }\n+\n+            $option->values()->whereNotIn('id', $keptValueIds)->delete();\n         }\n+\n+        $product->options()->whereNotIn('id', $keptOptionIds)->delete();\n     }\n*** Update File: /Users/fabianwesner/Herd/shop/app/Services/VariantMatrixService.php\n@@\n-use App\\Models\\InventoryItem;\n use App\\Models\\OrderLine;\n@@\n-            $existing = $product->variants->keyBy(fn (ProductVariant $variant): string => $this->key($variant->optionValues->modelKeys()));\n+            $existing = $product->variants;\n             $template = $product->variants->first();\n-            $desiredKeys = [];\n+            $matchedVariantIds = [];\n \n             foreach ($combinations as $position => $combination) {\n                 $key = $this->key($combination);\n-                $desiredKeys[] = $key;\n-                if ($existing->has($key)) {\n-                    $existing[$key]->update(['position' => $position, 'status' => 'active', 'is_default' => $groups === []]);\n+                $matchingVariant = $existing->first(fn (ProductVariant $variant): bool => ! in_array($variant->id, $matchedVariantIds, true)\n+                    && $this->key($variant->optionValues->modelKeys()) === $key);\n+                if ($matchingVariant !== null) {\n+                    $matchingVariant->update(['position' => $position, 'status' => 'active', 'is_default' => $groups === []]);\n+                    $matchedVariantIds[] = $matchingVariant->id;\n                     continue;\n                 }\n@@\n                 if ($combination !== []) {\n                     $variant->optionValues()->sync($combination);\n                 }\n-                InventoryItem::withoutGlobalScopes()->create([\n-                    'store_id' => $product->store_id,\n-                    'variant_id' => $variant->id,\n-                    'quantity_on_hand' => 0,\n-                    'quantity_reserved' => 0,\n-                    'policy' => 'deny',\n-                ]);\n+                $matchedVariantIds[] = $variant->id;\n             }\n \n-            foreach ($existing as $key => $variant) {\n-                if (in_array($key, $desiredKeys, true)) {\n+            foreach ($existing as $variant) {\n+                if (in_array($variant->id, $matchedVariantIds, true)) {\n                     continue;\n                 }\n*** Update File: /Users/fabianwesner/Herd/shop/database/seeders/ProductSeeder.php\n@@\n-                InventoryItem::withoutGlobalScopes()->create([\n-                    'store_id' => $store->id,\n-                    'variant_id' => $variant->id,\n-                    'quantity_on_hand' => $inventory,\n-                    'quantity_reserved' => 0,\n-                    'policy' => $policy,\n-                ]);\n+                InventoryItem::withoutGlobalScopes()->updateOrCreate(\n+                    ['variant_id' => $variant->id],\n+                    [\n+                        'store_id' => $store->id,\n+                        'quantity_on_hand' => $inventory,\n+                        'quantity_reserved' => 0,\n+                        'policy' => $policy,\n+                    ],\n+                );\n*** End Patch";
text(await tools.apply_patch(patch));


Success. Updated the following files:
M /Users/fabianwesner/Herd/shop/app/Models/ProductVariant.php
M /Users/fabianwesner/Herd/shop/app/Services/ProductService.php
M /Users/fabianwesner/Herd/shop/app/Services/VariantMatrixService.php
M /Users/fabianwesner/Herd/shop/database/seeders/ProductSeeder.php

@@ -52,3 +52,3 @@
                 ]);
-                InventoryItem::withoutGlobalScopes()->firstOrCreate(
+                InventoryItem::withoutGlobalScopes()->updateOrCreate(
                     ['variant_id' => $variant->id],
@@ -130,9 +130,40 @@
         }
-        $product->options()->delete();
+
+        $existingOptions = $product->options()->with('values')->get();
+        $keptOptionIds = [];
+
         foreach (array_values($options) as $position => $optionData) {
-            $option = $product->options()->create(['name' => $optionData['name'], 'position' => $position]);
-            foreach (array_values((array) ($optionData['values'] ?? [])) as $valuePosition => $value) {
-                $option->values()->create(['value' => is_array($value) ? $value['value'] : $value, 'position' => $valuePosition]);
+            $name = trim((string) ($optionData['name'] ?? ''));
+            $values = array_values((array) ($optionData['values'] ?? []));
+            if ($name === '' || $values === []) {
+                throw new \InvalidArgumentException('Every product option needs a name and at least one value.');
             }
+
+            $option = isset($optionData['id'])
+                ? $existingOptions->firstWhere('id', (int) $optionData['id'])
+                : $existingOptions->first(fn ($candidate) => mb_strtolower($candidate->name) === mb_strtolower($name));
+            $option ??= $product->options()->make();
+            $option->fill(['name' => $name, 'position' => $position])->save();
+            $keptOptionIds[] = $option->id;
+
+            $existingValues = $option->values;
+            $keptValueIds = [];
+            foreach ($values as $valuePosition => $valueData) {
+                $value = trim((string) (is_array($valueData) ? ($valueData['value'] ?? '') : $valueData));
+                if ($value === '') {
+                    throw new \InvalidArgumentException('Product option values may not be empty.');
+                }
+
+                $optionValue = is_array($valueData) && isset($valueData['id'])
+                    ? $existingValues->firstWhere('id', (int) $valueData['id'])
+                    : $existingValues->first(fn ($candidate) => mb_strtolower($candidate->value) === mb_strtolower($value));
+                $optionValue ??= $option->values()->make();
+                $optionValue->fill(['value' => $value, 'position' => $valuePosition])->save();
+                $keptValueIds[] = $optionValue->id;
+            }
+
+            $option->values()->whereNotIn('id', $keptValueIds)->delete();
         }
+
+        $product->options()->whereNotIn('id', $keptOptionIds)->delete();
     }

@@ -97,9 +97,11 @@
                 }
-                InventoryItem::withoutGlobalScopes()->create([
-                    'store_id' => $store->id,
-                    'variant_id' => $variant->id,
-                    'quantity_on_hand' => $inventory,
-                    'quantity_reserved' => 0,
-                    'policy' => $policy,
-                ]);
+                InventoryItem::withoutGlobalScopes()->updateOrCreate(
+                    ['variant_id' => $variant->id],
+                    [
+                        'store_id' => $store->id,
+                        'quantity_on_hand' => $inventory,
+                        'quantity_reserved' => 0,
+                        'policy' => $policy,
+                    ],
+                );
             }

@@ -5,2 +5,3 @@
 use App\Enums\VariantStatus;
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
@@ -11,2 +12,3 @@
 use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Validation\ValidationException;

@@ -16,2 +18,39 @@

+    protected static function booted(): void
+    {
+        static::saving(function (ProductVariant $variant): void {
+            $sku = trim((string) $variant->sku);
+            if ($sku === '') {
+                return;
+            }
+
+            $storeId = Product::withoutGlobalScopes()->whereKey($variant->product_id)->value('store_id');
+            $duplicateExists = static::query()
+                ->where('sku', $sku)
+                ->when($variant->exists, fn (Builder $query) => $query->whereKeyNot($variant->getKey()))
+                ->whereHas('product', fn (Builder $query) => $query->withoutGlobalScopes()->where('store_id', $storeId))
+                ->exists();
+
+            if ($duplicateExists) {
+                throw ValidationException::withMessages(['sku' => 'The SKU has already been taken for this store.']);
+            }
+
+            $variant->sku = $sku;
+        });
+
+        static::created(function (ProductVariant $variant): void {
+            $storeId = Product::withoutGlobalScopes()->whereKey($variant->product_id)->value('store_id');
+
+            InventoryItem::withoutGlobalScopes()->firstOrCreate(
+                ['variant_id' => $variant->getKey()],
+                [
+                    'store_id' => $storeId,
+                    'quantity_on_hand' => 0,
+                    'quantity_reserved' => 0,
+                    'policy' => 'deny',
+                ],
+            );
+        });
+    }
+
     protected $fillable = [

@@ -4,3 +4,2 @@

-use App\Models\InventoryItem;
 use App\Models\OrderLine;
@@ -19,5 +18,5 @@
             $combinations = $groups === [] ? [[]] : $this->cartesian(array_values($groups));
-            $existing = $product->variants->keyBy(fn (ProductVariant $variant): string => $this->key($variant->optionValues->modelKeys()));
+            $existing = $product->variants;
             $template = $product->variants->first();
-            $desiredKeys = [];
+            $matchedVariantIds = [];

@@ -25,5 +24,7 @@
                 $key = $this->key($combination);
-                $desiredKeys[] = $key;
-                if ($existing->has($key)) {
-                    $existing[$key]->update(['position' => $position, 'status' => 'active', 'is_default' => $groups === []]);
+                $matchingVariant = $existing->first(fn (ProductVariant $variant): bool => ! in_array($variant->id, $matchedVariantIds, true)
+                    && $this->key($variant->optionValues->modelKeys()) === $key);
+                if ($matchingVariant !== null) {
+                    $matchingVariant->update(['position' => $position, 'status' => 'active', 'is_default' => $groups === []]);
+                    $matchedVariantIds[] = $matchingVariant->id;
                     continue;
@@ -46,13 +47,7 @@
                 }
-                InventoryItem::withoutGlobalScopes()->create([
-                    'store_id' => $product->store_id,
-                    'variant_id' => $variant->id,
-                    'quantity_on_hand' => 0,
-                    'quantity_reserved' => 0,
-                    'policy' => 'deny',
-                ]);
+                $matchedVariantIds[] = $variant->id;
             }

-            foreach ($existing as $key => $variant) {
-                if (in_array($key, $desiredKeys, true)) {
+            foreach ($existing as $variant) {
+                if (in_array($variant->id, $matchedVariantIds, true)) {
                     continue;


Script completed
Wall time 0.8 seconds
Output:


Input:
const r = await tools.exec_command({
  cmd: "sed -n '1,120p' app/Models/ProductOption.php && sed -n '1,110p' app/Models/ProductOptionValue.php && vendor/bin/pint --dirty --test && php -l app/Models/ProductVariant.php && php -l app/Services/ProductService.php && php artisan schedule:list && php artisan config:cache && php artisan config:clear",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 30000,
  max_output_tokens: 20000
});
text(r.output);
text(`exit=${r.exit_code}`);


Script completed
Wall time 1.6 seconds
Output:

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class ProductOption extends Model
{
    use HasFactory;

    public $timestamps = false;

    protected $fillable = ['product_id', 'name', 'position'];

    protected function casts(): array
    {
        return ['position' => 'integer'];
    }

    public function product(): BelongsTo
    {
        return $this->belongsTo(Product::class);
    }

    public function values(): HasMany
    {
        return $this->hasMany(ProductOptionValue::class)->orderBy('position');
    }
}
<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class ProductOptionValue extends Model
{
    use HasFactory;

    public $timestamps = false;

    protected $fillable = ['product_option_id', 'value', 'position'];

    protected function casts(): array
    {
        return ['position' => 'integer'];
    }

    public function option(): BelongsTo
    {
        return $this->belongsTo(ProductOption::class, 'product_option_id');
    }

    public function variants(): BelongsToMany
    {
        return $this->belongsToMany(ProductVariant::class, 'variant_option_values', 'product_option_value_id', 'variant_id')
            ->using(VariantOptionValue::class);
    }
}

  ⨯⨯..⨯⨯......⨯⨯⨯⨯⨯⨯⨯.⨯⨯⨯⨯⨯⨯⨯⨯⨯⨯.⨯....⨯⨯⨯⨯⨯⨯

  ──────────────────────────────────────────────────────────────────── Laravel
    FAIL   ......................................... 42 files, 28 style issues
  ⨯ app/Http/Requests/CreateFulfillmentRequest.php class_attributes_separatio…
  ⨯ app/Http/Requests/CreateRefundRequest.php class_attributes_separation, br…
  ⨯ app/Http/Requests/RegisterCustomerRequest.php class_attributes_separation…
  ⨯ app/Http/Requests/SetCheckoutAddressRequest.php class_attributes_separati…
  ⨯ app/Http/Requests/SetCheckoutShippingRequest.php class_attributes_separat…
  ⨯ app/Http/Requests/StoreCollectionRequest.php class_attributes_separation,…
  ⨯ app/Http/Requests/StoreCustomerAddressRequest.php class_attributes_separa…
  ⨯ app/Http/Requests/StoreDiscountRequest.php class_attributes_separation, b…
  ⨯ app/Http/Requests/StorePageRequest.php class_attributes_separation, brace…
  ⨯ app/Http/Requests/StoreProductRequest.php braces_position, statement_inde…
  ⨯ app/Http/Requests/StoreShippingRateRequest.php class_attributes_separatio…
  ⨯ app/Http/Requests/StoreShippingZoneRequest.php class_attributes_separatio…
  ⨯ app/Http/Requests/UpdateCollectionRequest.php braces_position, statement_…
  ⨯ app/Http/Requests/UpdateCustomerAddressRequest.php braces_position, state…
  ⨯ app/Http/Requests/UpdateDiscountRequest.php braces_position, statement_in…
  ⨯ app/Http/Requests/UpdatePageRequest.php braces_position, statement_indent…
  ⨯ app/Http/Requests/UpdateTaxSettingsRequest.php class_attributes_separatio…
  ⨯ app/Livewire/Admin/Products/Form.php class_attributes_separation, phpdoc_…
  ⨯ app/Livewire/Admin/Products/Index.php unary_operator_spaces, braces_posit…
  ⨯ app/Providers/AppServiceProvider.php                       ordered_imports
  ⨯ app/Services/VariantMatrixService.php unary_operator_spaces, no_unused_im…
  ⨯ config/logging.php                                         ordered_imports
  ⨯ database/seeders/ProductSeeder.php unary_operator_spaces, no_unused_impor…
  ⨯ routes/console.php                                         ordered_imports
  ⨯ tests/Feature/Shop/CatalogCartPricingTest.php            no_unused_imports
  ⨯ tests/Feature/Shop/TenancyAndAuthorizationTest.php       no_unused_imports
  ⨯ tests/Pest.php                                                phpdoc_align
  ⨯ tests/Unit/ShopCalculatorsTest.php                         ordered_imports


Input:
const r = await tools.exec_command({
  cmd: "vendor/bin/pint app/Http/Requests app/Models/ProductVariant.php app/Providers/AppServiceProvider.php app/Services/ProductService.php app/Services/VariantMatrixService.php config/logging.php config/cache.php config/queue.php config/session.php config/shop.php database/seeders/ProductSeeder.php routes/console.php && php -l app/Models/ProductVariant.php && php -l app/Services/ProductService.php && php -l app/Services/VariantMatrixService.php && php artisan schedule:list && php artisan config:cache && php artisan config:clear",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 30000,
  max_output_tokens: 20000
});
text(r.output);
text(`exit=${r.exit_code}`);


Script completed
Wall time 1.5 seconds
Output:

  ✓✓✓✓✓✓✓.✓✓✓✓✓✓✓✓✓✓.✓.✓✓....✓✓

  ──────────────────────────────────────────────────────────────────── Laravel
    FIXED   .................................. 29 files, 22 style issues fixed
  ✓ app/Http/Requests/CreateFulfillmentRequest.php class_attributes_separatio…
  ✓ app/Http/Requests/CreateRefundRequest.php class_attributes_separation, br…
  ✓ app/Http/Requests/RegisterCustomerRequest.php class_attributes_separation…
  ✓ app/Http/Requests/SetCheckoutAddressRequest.php class_attributes_separati…
  ✓ app/Http/Requests/SetCheckoutShippingRequest.php class_attributes_separat…
  ✓ app/Http/Requests/StoreCollectionRequest.php class_attributes_separation,…
  ✓ app/Http/Requests/StoreCustomerAddressRequest.php class_attributes_separa…
  ✓ app/Http/Requests/StoreDiscountRequest.php class_attributes_separation, b…
  ✓ app/Http/Requests/StorePageRequest.php class_attributes_separation, brace…
  ✓ app/Http/Requests/StoreProductRequest.php braces_position, statement_inde…
  ✓ app/Http/Requests/StoreShippingRateRequest.php class_attributes_separatio…
  ✓ app/Http/Requests/StoreShippingZoneRequest.php class_attributes_separatio…
  ✓ app/Http/Requests/UpdateCollectionRequest.php braces_position, statement_…
  ✓ app/Http/Requests/UpdateCustomerAddressRequest.php braces_position, state…
  ✓ app/Http/Requests/UpdateDiscountRequest.php braces_position, statement_in…
  ✓ app/Http/Requests/UpdatePageRequest.php braces_position, statement_indent…
  ✓ app/Http/Requests/UpdateTaxSettingsRequest.php class_attributes_separatio…
  ✓ app/Providers/AppServiceProvider.php                       ordered_imports
  ✓ app/Services/VariantMatrixService.php unary_operator_spaces, no_unused_im…
  ✓ config/logging.php                                         ordered_imports
  ✓ database/seeders/ProductSeeder.php unary_operator_spaces, no_unused_impor…
  ✓ routes/console.php                                         ordered_imports

No syntax errors detected in app/Models/ProductVariant.php
No syntax errors detected in app/Services/ProductService.php
No syntax errors detected in app/Services/VariantMatrixService.php

  */15 * * * *  App\Jobs\ExpireAbandonedCheckouts  Next Due: 11 minutes from now
  30   0 * * *  App\Jobs\CleanupAbandonedCarts .... Next Due: 3 hours from now
  0    1 * * *  App\Jobs\AggregateAnalytics ....... Next Due: 4 hours from now
  0    2 * * *  App\Jobs\CancelUnpaidBankTransferOrders  Next Due: 5 hours from now

   INFO  Configuration cached successfully.

   INFO  Configuration cache cleared successfully.


Message Type: MESSAGE
Task name: /root
Sender: /root/qa_engineer
Payload:


A domain audit found two subtle spec gaps before they could surface in UI: variants now enforce tenant-scoped SKU uniqueness and automatically receive exactly one inventory record, while option edits preserve existing variant identities, prices, and stock. Focused QA coverage is being added around those invariants.


Input:
const r = await tools.exec_command({
  cmd: "php artisan test --compact tests/Feature/Shop/CatalogCartPricingTest.php tests/Unit/ShopCalculatorsTest.php",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 30000,
  max_output_tokens: 30000,
  sandbox_permissions: "require_escalated",
  justification: "May I run the focused Pest shop test suite, which needs to bind its local parallel-test socket?",
  prefix_rule: ["php", "artisan", "test"]
});
text(r.output);
text(`exit=${r.exit_code}`);


Script completed
Wall time 5.5 seconds
Output:

  .................⨯..................
  ────────────────────────────────────────────────────────────────────────────
   FAILED  Tests\Feature\Shop\CatalogCartPricingTest > `cart mutations and o…
  Failed asserting that an instance of class ErrorException is an instance of class App\Exceptions\DomainException.

  at tests/Feature/Shop/CatalogCartPricingTest.php:311
    307▕         $draft = makeSellableVariant($store, productAttributes: ['status' => 'draft', 'published_at' => null]);
    308▕         $empty = makeSellableVariant($store, inventoryAttributes: ['quantity_on_hand' => 1]);
    309▕         $service = app(CartService::class);
    310▕
  ➜ 311▕         expect(fn () => $service->addLine($cart, $foreign['variant']))->toThrow(DomainException::class)
    312▕             ->and(fn () => $service->addLine($cart, $draft['variant']))->toThrow(DomainException::class)
    313▕             ->and(fn () => $service->addLine($cart, $empty['variant'], 2))->toThrow(InsufficientInventoryException::class);
    314▕     });
    315▕

  1   tests/Feature/Shop/CatalogCartPricingTest.php:311

  Tests:    1 failed, 35 passed (152 assertions)
  Duration: 0.78s


Input:
const r = await tools.exec_command({
  cmd: "sed -n '1,175p' app/Services/CartService.php && sed -n '280,325p' tests/Feature/Shop/CatalogCartPricingTest.php && php artisan test tests/Feature/Shop/CatalogCartPricingTest.php --filter='rejects foreign' -vvv",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 30000,
  max_output_tokens: 30000,
  sandbox_permissions: "require_escalated",
  justification: "May I rerun the single failing Pest scenario with diagnostic output to locate the cart-domain defect?",
  prefix_rule: ["php", "artisan", "test"]
});
text(r.output);
text(`exit=${r.exit_code}`);


Script completed
Wall time 2.4 seconds
Output:

<?php

namespace App\Services;

use App\Exceptions\CartVersionMismatchException;
use App\Exceptions\DomainException;
use App\Models\Cart;
use App\Models\CartLine;
use App\Models\Customer;
use App\Models\ProductVariant;
use App\Models\Store;
use BackedEnum;
use Illuminate\Support\Facades\DB;

final class CartService
{
    public function __construct(private readonly InventoryService $inventory) {}

    public function create(Store $store, ?Customer $customer = null): Cart
    {
        return Cart::withoutGlobalScopes()->create([
            'store_id' => $store->id,
            'customer_id' => $customer?->id,
            'currency' => $store->default_currency,
            'cart_version' => 1,
            'status' => 'active',
        ]);
    }

    public function getOrCreateForSession(Store $store, ?Customer $customer = null): Cart
    {
        if ($customer !== null) {
            $customerCart = Cart::withoutGlobalScopes()
                ->where('store_id', $store->id)
                ->where('customer_id', $customer->id)
                ->where('status', 'active')
                ->latest('id')
                ->first();

            if ($customerCart !== null) {
                return $customerCart;
            }
        }

        $cartId = session('cart_id');
        if ($cartId !== null) {
            $cart = Cart::withoutGlobalScopes()
                ->where('store_id', $store->id)
                ->where('status', 'active')
                ->find($cartId);

            if ($cart !== null) {
                return $cart;
            }
        }

        $cart = $this->create($store, $customer);
        session(['cart_id' => $cart->id]);

        return $cart;
    }

    public function addLine(Cart $cart, int|ProductVariant $variant, int $quantity = 1, ?int $expectedVersion = null): CartLine
    {
        $this->assertVersion($cart, $expectedVersion);
        $this->positive($quantity);
        $variant = $variant instanceof ProductVariant
            ? $variant
            : ProductVariant::withoutGlobalScopes()->with(['product', 'inventoryItem'])->findOrFail($variant);
        $variant->loadMissing(['product', 'inventoryItem']);

        if ((int) $variant->product->store_id !== (int) $cart->store_id) {
            throw new DomainException('The selected variant does not belong to this store.');
        }

        if ($this->enumValue($variant->product->status) !== 'active' || $this->enumValue($variant->status) !== 'active') {
            throw new DomainException('This product is not available.');
        }

        return DB::transaction(function () use ($cart, $variant, $quantity): CartLine {
            $line = CartLine::query()->where('cart_id', $cart->id)->where('variant_id', $variant->id)->first();
            $newQuantity = $quantity + ($line?->quantity ?? 0);

            if ($variant->inventoryItem !== null && ! $this->inventory->checkAvailability($variant->inventoryItem, $newQuantity)) {
                throw new \App\Exceptions\InsufficientInventoryException('The requested quantity is not available.');
            }

            $amounts = $this->amounts((int) $variant->price_amount, $newQuantity);
            $line ??= new CartLine(['cart_id' => $cart->id, 'variant_id' => $variant->id]);
            $line->fill(['quantity' => $newQuantity, ...$amounts])->save();
            $this->bumpVersion($cart);

            return $line->refresh();
        });
    }

    public function updateLineQuantity(Cart $cart, int $lineId, int $quantity, ?int $expectedVersion = null): CartLine
    {
        $this->assertVersion($cart, $expectedVersion);
        if ($quantity === 0) {
            $this->removeLine($cart, $lineId, $expectedVersion);

            return new CartLine;
        }
        $this->positive($quantity);

        return DB::transaction(function () use ($cart, $lineId, $quantity): CartLine {
            $line = CartLine::query()->where('cart_id', $cart->id)->with('variant.inventoryItem')->findOrFail($lineId);

            if ($line->variant->inventoryItem !== null && ! $this->inventory->checkAvailability($line->variant->inventoryItem, $quantity)) {
                throw new \App\Exceptions\InsufficientInventoryException('The requested quantity is not available.');
            }

            $line->fill(['quantity' => $quantity, ...$this->amounts((int) $line->variant->price_amount, $quantity)])->save();
            $this->bumpVersion($cart);

            return $line->refresh();
        });
    }

    public function removeLine(Cart $cart, int $lineId, ?int $expectedVersion = null): void
    {
        $this->assertVersion($cart, $expectedVersion);
        DB::transaction(function () use ($cart, $lineId): void {
            CartLine::query()->where('cart_id', $cart->id)->findOrFail($lineId)->delete();
            $this->bumpVersion($cart);
        });
    }

    public function mergeOnLogin(Cart $guest, Cart $customer): Cart
    {
        if ((int) $guest->store_id !== (int) $customer->store_id) {
            throw new DomainException('Carts from different stores cannot be merged.');
        }

        return DB::transaction(function () use ($guest, $customer): Cart {
            $guest->load('lines');
            foreach ($guest->lines as $line) {
                $target = CartLine::query()->where('cart_id', $customer->id)->where('variant_id', $line->variant_id)->first();
                if ($target !== null) {
                    $target->quantity += $line->quantity;
                    $target->fill($this->amounts((int) $target->unit_price_amount, (int) $target->quantity))->save();
                } else {
                    $line->cart_id = $customer->id;
                    $line->save();
                }
            }

            $guest->update(['status' => 'abandoned']);
            $this->bumpVersion($customer);
            session()->forget('cart_id');

            return $customer->refresh()->load('lines');
        });
    }

    public function assertVersion(Cart $cart, ?int $expectedVersion): void
    {
        if ($expectedVersion !== null && (int) $cart->cart_version !== $expectedVersion) {
            throw new CartVersionMismatchException($cart->fresh('lines') ?? $cart);
        }
    }

    /** @return array{unit_price_amount: int, line_subtotal_amount: int, line_discount_amount: int, line_total_amount: int} */
    private function amounts(int $unitPrice, int $quantity): array
    {
        $subtotal = $unitPrice * $quantity;

        return [
            'unit_price_amount' => $unitPrice,
            'line_subtotal_amount' => $subtotal,
            'line_discount_amount' => 0,
            'line_total_amount' => $subtotal,
        ];
    }
        ['cart' => $cart, 'line' => $line] = makeCartWithLine($store, $sku['variant'], 2);

        app(CartService::class)->updateLineQuantity($cart, $line->id, 0, 2);

        expect($cart->lines()->count())->toBe(0)
            ->and($cart->cart_version)->toBe(3);
    });

    it('returns current state through a cart version conflict', function () {
        $store = createStoreContext()['store'];
        $sku = makeSellableVariant($store);
        ['cart' => $cart, 'line' => $line] = makeCartWithLine($store, $sku['variant']);

        try {
            app(CartService::class)->updateLineQuantity($cart, $line->id, 2, 1);
            $this->fail('A stale cart mutation was accepted.');
        } catch (CartVersionMismatchException $exception) {
            expect($exception->cart->cart_version)->toBe(2)
                ->and($exception->cart->lines)->toHaveCount(1);
        }
    });

    it('rejects foreign inactive and unavailable variants', function () {
        $store = createStoreContext()['store'];
        $other = createStoreContext()['store'];
        $cart = app(CartService::class)->create($store);
        $foreign = makeSellableVariant($other);
        $draft = makeSellableVariant($store, productAttributes: ['status' => 'draft', 'published_at' => null]);
        $empty = makeSellableVariant($store, inventoryAttributes: ['quantity_on_hand' => 1]);
        $service = app(CartService::class);

        expect(fn () => $service->addLine($cart, $foreign['variant']))->toThrow(DomainException::class)
            ->and(fn () => $service->addLine($cart, $draft['variant']))->toThrow(DomainException::class)
            ->and(fn () => $service->addLine($cart, $empty['variant'], 2))->toThrow(InsufficientInventoryException::class);
    });

    it('allows continue-policy overselling and merges guest quantities', function () {
        $store = createStoreContext()['store'];
        $first = makeSellableVariant($store, inventoryAttributes: ['quantity_on_hand' => 0, 'policy' => 'continue']);
        $second = makeSellableVariant($store);
        $service = app(CartService::class);
        $guest = $service->create($store);
        $customer = $service->create($store);
        $service->addLine($guest, $first['variant'], 2);
        $service->addLine($customer, $first['variant'], 1);
        $service->addLine($customer, $second['variant'], 3);

   FAIL  Tests\Feature\Shop\CatalogCartPricingTest
  ⨯ cart mutations and optimistic concurrency → it rejects foreign inactive and unavailable variants 0.16s
  ────────────────────────────────────────────────────────────────────────────
   FAILED  Tests\Feature\Shop\CatalogCartPricingTest > `cart mutations and optimistic concurrency` → it rejects foreign inactive and unavailable variants
  Failed asserting that an instance of class ErrorException is an instance of class App\Exceptions\DomainException.

  at tests/Feature/Shop/CatalogCartPricingTest.php:311
    307▕         $draft = makeSellableVariant($store, productAttributes: ['status' => 'draft', 'published_at' => null]);
    308▕         $empty = makeSellableVariant($store, inventoryAttributes: ['quantity_on_hand' => 1]);
    309▕         $service = app(CartService::class);
    310▕
  ➜ 311▕         expect(fn () => $service->addLine($cart, $foreign['variant']))->toThrow(DomainException::class)
    312▕             ->and(fn () => $service->addLine($cart, $draft['variant']))->toThrow(DomainException::class)
    313▕             ->and(fn () => $service->addLine($cart, $empty['variant'], 2))->toThrow(InsufficientInventoryException::class);
    314▕     });
    315▕

  1   tests/Feature/Shop/CatalogCartPricingTest.php:311

  Tests:    1 failed (1 assertions)
  Duration: 0.21s


Input:
const patch = "*** Begin Patch\n*** Update File: /Users/fabianwesner/Herd/shop/app/Services/CartService.php\n@@\n         $variant = $variant instanceof ProductVariant\n             ? $variant\n-            : ProductVariant::withoutGlobalScopes()->with(['product', 'inventoryItem'])->findOrFail($variant);\n-        $variant->loadMissing(['product', 'inventoryItem']);\n+            : ProductVariant::withoutGlobalScopes()->findOrFail($variant);\n+        $variant->load([\n+            'product' => fn ($query) => $query->withoutGlobalScopes(),\n+            'inventoryItem' => fn ($query) => $query->withoutGlobalScopes(),\n+        ]);\n \n-        if ((int) $variant->product->store_id !== (int) $cart->store_id) {\n+        if ($variant->product === null || (int) $variant->product->store_id !== (int) $cart->store_id) {\n             throw new DomainException('The selected variant does not belong to this store.');\n         }\n*** End Patch";
text(await tools.apply_patch(patch));


Success. Updated the following files:
M /Users/fabianwesner/Herd/shop/app/Services/CartService.php

@@ -68,6 +68,9 @@
             ? $variant
-            : ProductVariant::withoutGlobalScopes()->with(['product', 'inventoryItem'])->findOrFail($variant);
-        $variant->loadMissing(['product', 'inventoryItem']);
+            : ProductVariant::withoutGlobalScopes()->findOrFail($variant);
+        $variant->load([
+            'product' => fn ($query) => $query->withoutGlobalScopes(),
+            'inventoryItem' => fn ($query) => $query->withoutGlobalScopes(),
+        ]);

-        if ((int) $variant->product->store_id !== (int) $cart->store_id) {
+        if ($variant->product === null || (int) $variant->product->store_id !== (int) $cart->store_id) {
             throw new DomainException('The selected variant does not belong to this store.');


Script completed
Wall time 0.2 seconds
Output:


Input:
const r = await tools.exec_command({
  cmd: "vendor/bin/pint app/Services/CartService.php && php artisan test --compact tests/Feature/Shop/CatalogCartPricingTest.php tests/Unit/ShopCalculatorsTest.php",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 30000,
  max_output_tokens: 30000,
  sandbox_permissions: "require_escalated",
  justification: "May I rerun the repaired catalog, cart, and pricing acceptance slice?",
  prefix_rule: ["php", "artisan", "test"]
});
text(r.output);
text(`exit=${r.exit_code}`);


Script completed
Wall time 5.2 seconds
Output:

  .

  ──────────────────────────────────────────────────────────────────── Laravel
    PASS   ............................................................ 1 file

  ....................................

  Tests:    36 passed (154 assertions)
  Duration: 0.69s


Input:
const r = await tools.exec_command({
  cmd: "find tests/Feature/Shop -type f -maxdepth 1 -print | sort && for f in tests/Feature/Shop/*.php; do echo \"$f $(rg -c '^\\s*(it|test)\\(' \"$f\")\"; done && git diff --stat && git status --short",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 10000,
  max_output_tokens: 12000
});
text(r.output);


Script completed
Wall time 0.1 seconds
Output:

tests/Feature/Shop/CatalogCartPricingTest.php
tests/Feature/Shop/TenancyAndAuthorizationTest.php
tests/Feature/Shop/CatalogCartPricingTest.php 23
tests/Feature/Shop/TenancyAndAuthorizationTest.php 12
 .env.example                          |   2 +-
 app/Models/ProductVariant.php         |  39 +++++++
 app/Providers/AppServiceProvider.php  |   6 +-
 app/Services/CartService.php          |   9 +-
 app/Services/ProductService.php       |  41 ++++++-
 app/Services/VariantMatrixService.php |  27 ++---
 config/cache.php                      |   2 +-
 config/logging.php                    |  10 ++
 config/queue.php                      |   2 +-
 config/session.php                    |   2 +-
 database/seeders/ProductSeeder.php    |  17 +--
 resources/css/app.css                 | 151 +++++++++++++++++++++++++
 routes/console.php                    |  10 ++
 tests/Pest.php                        | 203 +++++++++++++++++++++++++++-------
 14 files changed, 439 insertions(+), 82 deletions(-)
 M .env.example
 M app/Models/ProductVariant.php
 M app/Providers/AppServiceProvider.php
 M app/Services/CartService.php
 M app/Services/ProductService.php
 M app/Services/VariantMatrixService.php
 M config/cache.php
 M config/logging.php
 M config/queue.php
 M config/session.php
 M database/seeders/ProductSeeder.php
 M resources/css/app.css
 M routes/console.php
 M tests/Pest.php
?? app/Http/Requests/
?? app/Livewire/Admin/
?? config/shop.php
?? resources/views/admin/
?? resources/views/components/admin/
?? tests/Feature/Shop/
?? tests/Unit/ShopCalculatorsTest.php


Input:
const r = await tools.exec_command({
  cmd: "find app/Livewire/Admin -type f -print | sort && find resources/views/admin -type f -print | sort && find resources/views/components/admin -type f -print | sort",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 10000,
  max_output_tokens: 20000
});
text(r.output);


Script completed
Wall time 0.1 seconds
Output:

app/Livewire/Admin/AdminComponent.php
app/Livewire/Admin/Auth/ForgotPassword.php
app/Livewire/Admin/Auth/Login.php
app/Livewire/Admin/Auth/ResetPassword.php
app/Livewire/Admin/Dashboard.php
app/Livewire/Admin/Layout/Sidebar.php
app/Livewire/Admin/Layout/TopBar.php
app/Livewire/Admin/Products/Form.php
app/Livewire/Admin/Products/Index.php
resources/views/admin/auth/forgot-password.blade.php
resources/views/admin/auth/login.blade.php
resources/views/admin/auth/reset-password.blade.php
resources/views/admin/dashboard.blade.php
resources/views/admin/layout/sidebar.blade.php
resources/views/admin/layout/top-bar.blade.php
resources/views/admin/layouts/app.blade.php
resources/views/admin/layouts/auth.blade.php
resources/views/admin/products/form.blade.php
resources/views/admin/products/index.blade.php
resources/views/components/admin/breadcrumbs.blade.php
resources/views/components/admin/card.blade.php
resources/views/components/admin/confirmation-modal.blade.php
resources/views/components/admin/empty-state.blade.php
resources/views/components/admin/field.blade.php
resources/views/components/admin/form-section.blade.php
resources/views/components/admin/list-toolbar.blade.php
resources/views/components/admin/loading-overlay.blade.php
resources/views/components/admin/money.blade.php
resources/views/components/admin/page-header.blade.php
resources/views/components/admin/status-badge.blade.php
resources/views/components/admin/sticky-save-bar.blade.php
resources/views/components/admin/table-empty.blade.php
resources/views/components/admin/table-loading.blade.php
resources/views/components/admin/table-shell.blade.php
resources/views/components/admin/tabs.blade.php
resources/views/components/admin/toast-container.blade.php


Message Type: MESSAGE
Task name: /root
Sender: /root/frontend_architect/storefront_primitives
Payload:


Input:
const r = await tools.exec_command({
  cmd: "for f in app/Services/*.php app/Services/Payment/*.php; do echo \"### $f\"; sed -n '1,320p' \"$f\"; done",
  workdir: "/Users/fabianwesner/Herd/shop",
  yield_time_ms: 10000,
  max_output_tokens: 60000
});
text(r.output);